Perfect Group: Mathematics, Modern Algebra, Group Theory

Schur's Lemma: Mathematics, Representation Theory, Group (Mathematics), Algebra, Irreducible

Schreier Vector: Mathematics, Computational Group Theory, Orbit (Group Theory), Permutation Group, (Mathematics)

Prosolvable Group: Group, Algebra, Group (mathematics), Inverse Limit

Modular Group: group, Mathematics, Number theory, Geometry, Abstract algebra, group (mathematics), Matrix...